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SIOP allows users to directly authenticate peer-to-peer with the website without having to communicate with a centralized component. Afterward, the SSI wallet makes it possible to exchange Verifiable Credentials and provide any additional information that would normally be requested from the identity provider. While this solution is superior in terms of privacy, it also requires integration efforts by the website, probably hindering immediate mass adoption of the technology as of now. To provide solutions in the mid and the long term, the IOTA Foundation is therefore interested in both Web2 and Web3 solutions simultaneously. [3]
On 22 July 2022, ultimately IOTA chose a proposal by walt.id that covers both Web2 and Web3 solutions.
Walt.id is a provider of identity, NFT, and wallet infrastructure for developers and enterprises, offering expertise and providing services from conception, implementation, and support for managed cloud services. The company’s products are all open-source and are used by governments, public authorities, enterprises, and decentralized autonomous organizations to build applications and use cases for Web3 identity, NFTs and wallets quickly and without much complexity.[4]
References:
[1] Request for Proposals: Login With IOTA: https://files.iota.org/comms/Request_for_Proposals_Login_with_IOTA.pdf
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[3] Creating a Privacy-Preserving Login System: https://blog.iota.org/request-for-proposals-login-with-iota/
[4] Login With IOTA is Coming!: https://blog.iota.org/login-with-iota-walt-id/
[5] IOTA Q4 2023 Progress Report: https://blog.iota.org/q4-2023-progress-report/